\documentclass[12pt,a4paper]{report}
%自定义命令的宏包
\usepackage{zwfcmd}
%设置背景色，保护视力
\definecolor{backcolorA}{RGB}{255,242,226} %秋叶褐
\definecolor{backcolorB}{RGB}{253,230,224} %胭脂红
\definecolor{backcolorC}{RGB}{227,237,205} %青草绿
\definecolor{backcolorD}{RGB}{220,226,241} %海天蓝
\definecolor{backcolorE}{RGB}{234,234,239} %极光灰
\pagecolor{backcolorC}
%文档开始
\begin{document}
%title
\title{SAP2000}
\maketitle
%插入目录
\tableofcontents
%-----------------------------
\pagecolor{backcolorA}
\input{./files/c1_1}
\input{./files/c1_2}
\input{./files/c1_3}
\input{./files/c1_4}
%-----------------------------
\end{document}

